BUG: Exceptions not propagated from c_is_list_like in lib.pyx

[shwina]

Python exceptions originating in c_is_list_like() are not propagated as the function doesn't declare an exception value (except -1).

https://github.com/pandas-dev/pandas/blob/master/pandas/_libs/lib.pyx#L988

[jbrockmendel]

Can you give an example of where the problem shows up?

[shwina]

@jbrockmendel Unfortunately I'm not able to reproduce easily at this moment. I left a comment here that hopefully sheds some light on the issue.